"The immigration of workers will remain a topic in future. That is why it makes sense to take a look at the immigration regulations of countries with high immigration figures. Switzerland was selected in addition to the classical immigration countries of Australia, Canada and the USA. The...

"This paper analyses the (self-)selection of migrants between countries which have substantial differences in the inequality of earnings and income levels. In an extended version of the Roy-model we consider migration costs, which tend to grow less than proportional with the income level. As a...